Dogman speaks the truth. It's an issue with cookies, which is hard to track down to board or broswer. We could play the blame game, but it would really solve nothing.
You can check your browser settings and see if anything looks amiss. If anyone else mentions being logged out for no conceivable reason, we can try and track it down here.
But always, always write posts on your harddrive, and copy and paste into a browser. Short of a power outage or a suicidal cat, you'll never have a problem with losing a ton of work because of a minor glitch.
OS: In a world of bon-bons, you are a twinkie.
Ahnk: God damn you, I am Count Chocula and you know it.
I'm not spending my anniversary night thumping my head against the wall. - Damalis, on Moderating TRF
Then tell him you want it harder, damnit! - Ahnk, on Damalis